In vivo evaluation of the Raypex 5 by using different irrigants.

Introduction: The Raypex 5 is a fourth-generation electronic apex locator for which the accuracy in the presence of chlorhexidine (CHX) and ethylenediaminetetraacetic acid (EDTA) has not yet been tested in vivo. The aim of this in vivo study was to evaluate the performance of the Raypex 5 electronic apex locator in the presence of different irrigant solutions: 2.5% sodium hypochlorite (NaOCl), 2% CHX, and 17% EDTA.